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- W2899852271 abstract "The briquette volume evolution during the coking process is very important for the operation and health of a coke oven. The strength and CO2 gasification of formed ferro-coke determine its utilization as well as its effects on the blast furnace status. To enhance ferro-coke better performance during fabrication and utilization, a better understanding of the influence of iron minerals on the volume, strength, and CO2 gasification of ferro-coke is necessary. This study investigated the effects of different iron mineral fines (oolitic hematite, hematite, and limonite) on the volume evolution of blended briquettes (iron ore and coal) during the carbonization process using thermal-platform microscopy. Drum tests, diametral compression tests, and gasification tests were conducted on the formed ferro-coke. The microstructure and crystal structure of ferro-coke were characterized using SEM and XRD, respectively. This study reveals that the iron mineral type has little effect on the swelling behavior of blended briquettes but will strongly suppress the shrinkage behavior of the briquettes during the coking process, especially in the case of high iron mineral additions. The added amount of iron mineral has a greater influence on the volume change than does the iron mineral type. With increasing amounts of iron mineral, the strength of the ferro-coke strongly decreases. The impact of hematite, limonite, and oolitic hematite on the strength of formed ferro-coke gradually becomes weak. The influence of iron mineral on the gasification of formed ferro-coke decreases from hematite to oolitic hematite to limonite. The type and added amount of iron mineral fine have no influence on the gasification mechanism of ferro-coke. The minimum weighted mean activation energy of ferro-coke prepared by hematite contributes to its highest gasification reactivity." @default.
- W2899852271 created "2018-11-16" @default.
- W2899852271 creator A5003479517 @default.
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- W2899852271 date "2018-11-06" @default.
- W2899852271 modified "2023-10-17" @default.
- W2899852271 title "Influence of Iron Minerals on the Volume, Strength, and CO<sub>2</sub> Gasification of Ferro-coke" @default.
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- W2899852271 doi "https://doi.org/10.1021/acs.energyfuels.8b02644" @default.
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